StatCalc - Statistical Calculator

Enter your data (one number per line or comma-separated):

Sample Size (n) -

Mean (x̄) -

Median -

Standard Deviation (s) -

Variance (s²) -

Min / Max -

Sample Mean (x̄):

Sample Standard Deviation (s):

Sample Size (n):

Confidence Level:

Margin of Error -

Lower Bound -

Upper Bound -

Confidence Interval -

Sample Mean (x̄):

Sample Standard Deviation (s):

Sample Size (n):

Null Hypothesis Mean (μ₀):

t-statistic -

Degrees of Freedom -

p-value (two-tailed) -

Result (α = 0.05) -

Effect Size (Cohen's d):

Statistical Power:

Significance Level (α):

Required Sample Size (n) -

Effect Size Interpretation -